Jack for removing pinions, etc., from shafts



E. V. CARTER AND A. whSPRAGUE. JACK FOR REMOVING PINIONS, ETC., FROMSHAFTS. APPLICATION FILED FEB. 3. 1921.

1,403,893; Patented Jan. 17, 1922.

3 vwenkow U'NJI'TEE'D'HSTATES PATENT OFFICE- EDWARD V. CARTER AND ALBERTW. SPRAGUE, OF HUNTINGTON, WEST VIRGINIA.

JACK FOR"REMOVING PINIONS, ETC., FROM SHAFTS.

Application filed February 3, 1921.

To aZZ whom it may concern:

Be it known that we, EDWARD V. CARTER and ALBERT W. SPRAGUE, citizens ofthe United States of America, and residents of Huntington, county ofCabell, and State of West Virginia, have invented certain new and usefulImprovements in Jacks for Removing Pinions, Etc, from Shafts, of whichthe following is a full and clear specification.

The object of this invention is to provide a simple Inanually-operabledevice for stripping or removing pinions or bearings, collars, etc.,from shafts, and it consists of certain novel features described andclaimed.

In the drawing- Fig. l is a perspective form of our apparatus;

Fig. 2 is a similar view of a part of the view of a simple apparatusshowing a different manner of apl in it p Tigi 3 is a verticallongitudinal sectional view showing one way of applying the apparatus;

F ig.. 4 is a transverse section 011 the line 4-4 of Fig. 3.

In the drawing, 5 designates a cylinder closed at one end and openat theother end. Tapped through the thickened closed end of this 0- linder isa screw 6 which at its outer en is provided with a handle 7 for turningit and at its other end (which inner end lies within the cylinder 5) isprovided with a pointed centering-pin 8. Near the open end of thecylinder, it is provided with a pair of transverse slots 9 formed atdiametrically-opposite points. In connection with the tool thusdescribed, we employ an abutment fork 10 having a large fork 11 at oneend and a smaller fork 12 at the other end.

In applying this tool, the open end of the cylinder is slipped over theend of the shaft carrying the pinion 13, the center 8 being centered inthe end of the shaft 14. carrying the pinion this shaft in the presentinstance being the shaft of an armature 15. Then the fork 11 is passedthrough the slot like notches 9 in the opposite sides of the cylinder,the cylinder being positioned so that the arms of the fork will engagebehind the pinion, as shown in Fig. 3. Then, by screw- Specification ofLetters Patent.

Patented Jan. 17, 1922.

Serial No. 442,097.

ing inwardly the screw 6, it will be seen that I is brought intorequisition. This smaller fork is passed through the slots 9 in themanner shown in Fig. 2, the ball-bearing be ing of less diameter thanthe pinion and being of too small a diameter to be engaged by the armsof the fork 11.

It will be observed that this device may be employed for removingcollars, etc. from shafts as well as pinions and ball-bearings, and itwill be observed also that additional different-sized forks may besupplied with the tool so as to render the device operative with smalleror larger pinions, etc. It will be observed also that it is notessential that the several forks supplied with the tool shall be madeintegral, as a set of separate individual forks may be used, and it willbe further observed that the cylinder 5 forms virtually a pulling yokeand that, therefore, it is not essential that it shall be a full or truecylinder, the cylindrical form being chosen because of convenience andsimplicity of manufacture.

The nature and scope of the invention havin been thus indicated and itspreferred emboc iment having been specifically describe what is claimedas new is:

1. In a tool of the class set forth, a yoke like member having acylindrical open end provided with a slot in one side, a screw enteringthe other end of the yoke-like memher and adapted to push against theend of the shaft, and an abutment member insertable in said slot toengage behind the device that is to be pulled off the shaft.

2. In a tool of the class set forth, a yokelike member having acylindrical open end provided with slots at opposite sides, a screwentering the other end of the yoke-like member and adapted to pushagainst the end of the shaft, and a fork abutment member insertable insaid slot to engage behind the device that is to be pulled off theshaft.

3. In a tool of the class set forth, a yoke like member having acylindrical open end provided with slots at opposite sides, a screwentering the other end of the yoke-like member and adapted to pushagainst the end of the shaft, and a fork abutment memberini serteble insaid slot to engage behind the device that is to be pulled off theshaft, said abutment member beinguprovided with two EDWARD v. CARTER.ALBERT W. SPRAGUE.

